Heating apparatus



M. P. HATCHETT.

HEATING APPARATUS.

APPLlATloN FILED 111111.23, 1920.

Patented May 9,1922. 4

f ai A TTOHNEYS *TTES MARVIN PEARCE HATCHETT, OF DURAN'J, OKLAHOMA..

HEATING APPARATUS.

iaiiaaeis.

Specification of Letters Patent.

Patented May 9, i922.

Application led March 23, 1920. Serial No. 368,008.

To ali who/m, fit may 007006741:

Be it known that l, MARVIN PEAROE Hii'roi-rn'rr, a citizen of the United States, and a resident oil Durant, in the county oi Bryan and State oi Gklahoma, have invented certain new and useful Improvements in Heating Apparatus, oit which the following is a specification.

My invention is an improvement in heating apparatus, `and has for its object to provide an apparatus of the character specified, especially adapted for utilizing to the best advantage-the heating capacity ofan open grate, or the like, wherein cold air 1s drawn trom the outside of the building, heated by the open tire and distributed to the room at the upper portion thereof to thoroughly heat all parts ot the lroom and rooms above the room in which the open grate is located and rooms adjoining the room above, or the upper rooms of a building.

ln the drawing Figure l is a sectional View of a portion of a house or building` showing the apparatus in use, and v Figure 2 is a similar view showing another arrangement.

ln the embodiment of the invention shown in Figure l, an open lire, in the present 1nstance, a grate, indicated at 9, is arranged in the usual manner at the bottom of a flue l() which conducts the smoke to the outer air.

As is known, the only eiiicient heat of an open tire is radiant heat and but a small percentage or" the heat developed is utilized for heating the room in which the open fire is arranged. By far the greatest caloriic value oi the iuel escapes by the chimney or flue.

in tightly closed rooms, sufficient air does not enter to take the place of the column of air rising through the flue, and there is a tendency to rareiication of the air in the room. rllhus, the approximate equilibrium between the pressure inside and outside the room is disturbed resultingl in smoking chimneys, or insufficient draft.

In rooms having many openings, as for instance, cracks about the doors and in the floors, loose tting windows and the like, the equilibrium of the air pressure within and without is maintained by the disagreeable cold drafts that render it so diiiicult to keep the room comfortable.

The present invention overcomes this dificulty by adding convection heat to the kheat alone could not reach.

room, without appreciably diminishing the radiant heat, thus warming the remote portions of the room-where the lines of radiant The incoming air is heated by heat which is ordinarily wasted escaping up the flue to the outside air, and the fuel energy is thus conserved. The invention also comprehends the provision of means whereby not only the room or rooms in which the. grate is located may be effectively heated, but rooms above, that is upper rooms and rooms adjoining the rooms above, may also be effectively heated.

Vith this ob]- ect in view, I arrange within the flue l0 a pipe ll of suitable cross section, the said pipe extending to near the burning fuel in the grate at its lower end and to near the ceiling of a room indicated at 14 and l5. This arrangement is for heating` more than one room and iii the construction, the lower room has a grate 9 arranged at the bottom or" the iue l0. The heating pipe l1 which is arranged in the flue and of which there may be one for each room to be heated, extends from near the grate to near the ceiling of the room. The pipe 11 has a lateral inlet 13 at its lower end extending through the iiue wall to the outer air, and at its upper end said pipe has a lateral outlet, 14C 'for the room 12 and l5 for the room 8, the said outlet being near the ceiling of the room,

With this arrangement, a constant circulation of air is maintained, the cold air entering from the outside, being heated in the flue and being delivered at the ceilings of the rooms, from whence it circulates bac-k to the opening in iront of the grate 9, and passes upwardly through the flue. The course of the air is indicated by arrows and in addition to the supplying oi thoroughly heated air to all parts of the room, thefoul air is withdrawn, and a constant circulation of fresh air and heated fresh air being maintained. The heated air which usually passes out of the flue and is wasted, is utilized to heat the incoming air. As is known, warm air rises, while cold air sinks, yand the heated air entering at the top of the room, as it cools, tends to sink, and will be drawn out rom near the floor, by the pressure through the flue. rl`he pipe 1l, and it will be understood that several pipes may be used if desired, provides an open and easy path for the outside air to enter the rooms, to take the place of the partial vacuum produced by the exhaust or draft up the chimney. The chimney is thus free to draw, and at the same time ythe cold drafts through the chinls are diminished or eliminated.

ln order to provide an escape for the foul air in the room l2 an opening 16 is provided near the floor,vopening in to the flue, and a pipe' 1G leads from vthis opening to 'the outer air, the pipe beingkcapped on top in the usual manner to prevent rainfall from entering the room. Vlhis pipe hastens the circulation of the air and avoids interference with the draft of the flue.

With this arrangement the heated air in the pipe ll is delivered into the rooms 8 and l2 at the ceiling, andl circulatesin the same manner as described. ln each room, the heated air is also delivered at the ceiling` andthe foul air escapes through the flue by way of the pipe 1G.

ln Figure there is shown an arrangement for heatingl more than one room as in Figure i and also means whereby if it is desired, the room above the room in Which the grate is located and adjoining the room l2 on the opposite side thereof from the flue, may also be heated. As shown, the horizontal outlet lll is extended through the room 'l2 as indicated at 17 to pass through the room adjoining the room l2, an escape opening 18 being provided for the escape of the foul air.

The pipes will be constructed, in practice, of heavy material and Will vary in size, length and number in accordance With the size and position of the rooms to Abe heated, dampers being provided for reducing or closing the pipes, and the pipes may be in separable sections, or in lengths to suit. rlChey may be built With the chimneys or installed in those already built.

l claim:

A heating apparatus comprising in combination with an open grate and flue thereof, a heating pipe disposedvwithin the flue adjacent the back wall thereof and having its lower end leading through a Wall of the building directly to the external atmosphere, an elbow `at the lower end immediately above the grate, oppositely extending lateral outlet pipes leading from said heating pipe into the extreme upper portions of the rooms to be heated adjacent to the ceiling thereof, and a ventilator pipe leading into and along the flue from the lower portion of the room above the one in which thefgrate is located, said ventilator pipe being separate from the flue and of smaller diameter than the heatinc` pipe.

l Marvin PEARCE HATCHETT. 

